These "dirty snowballs" castoff gas and dust whenever they venture near the sun.
这些“脏雪球”在冒险接近太阳时会丢出气体和尘埃。
2
High gas costs and very low auction prices for carbon emissions within the European emissions Trading Scheme meant that generators chose to use dirty coal rather than gas.
Our days are packed with work, chores, obligations, dirty dishes, laundry, phone calls, text messages, the Internet, e-mails, high gas prices, low stock prices and more to do than we want to.